下面是家鸽的呼吸系统示意图，请据图回答下列问题

    Scientists say life will be very different in 2050.

    First，there will be no TV channels（频道）in 2050.People will choose a program from a computer and watch it on TV.In 2050，we will get information from the computers only.

    Second，water will be a big problem in 2050.In many places，people won't have water to drink.

    Third，cars will use new and clean fuels and they will go very fast.There will be a computer in every car.And the computers will control the cars and there won't be any accidents（事故）.

科学家将鱼的抗冻蛋白基因转入番茄中，使番茄的耐寒能力得到提高．下面相关叙述正确的是（　　）

①运用的是克隆技术；

②可以说明生物的性状是由基因控制的；

③运用的是转基因技术；

④可以说明基因主要存在于染色体上．